What would you do with massive IPs?

Let's just say that you had an IP genie that would give you a lot of virgin IPs, we'll use a few thousand as our number. If you had multiple data centers and let's say 10 servers with gigabit connections to the Internet...
What would you do to maximize your earning potential?

PS: For this illustration, pretend that emailing *from* these blocks is off the table.

PPS: If the ideas turn out to be really good, and if the mods allow it, this might turn into a contest with a prize given to the top few ideas.

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